package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class Test {
    public static void main(String[] args) throws IOException {
        FileOutputStream fos=new FileOutputStream("fos.txt");
        for (int i = 0; i <26 ; i++) {
            fos.write(i+97);
        }
        fos.close();
        System.out.println("写入完毕");



    }
}
